Tune(s) Needed in RI Have posted before (sorry)

[Inferno]

We have two 92 Typhoons and one 93, all three have pretty much the same issue.. they all breakup under load and hit fuel cut when trying to accellerate.. I am thinking of getting a moats burner, but I am really not to comfertable doing it myself without some sort of education.. if anone on here knows of anyone locally, or another way please let me know.. Summer is coming soon and I really want these all set by then....

 

[sy#2716]

Re: Tune(s) Needed in RI Have posted before (sorry)

These trucks do not have fuel cut. It pulls timing if it sees knock. First thing you need to do is get datamaster or Turnerpro and moniter what is going on becasue if not you will be looking into a new motor for all of them. Make sure that all the ignition componets are new and then if you do not have afpr might want to think about getting on of those.

If you would like to get into tuning go to code59.org and they have some bins that you can use and start your learning proccess.

 

[JSM]

Re: Tune(s) Needed in RI Have posted before (sorry)

Not fully true, the ECM will cut the fuel via turning the injectors off if the boost is over desired by X amount for Y amount of time.

Tune via chip probably won't fix the issues your having, could be wastegate settings, spark plugs, wires, cap, rotor.....start there first.

 

[Inferno]

Re: Tune(s) Needed in RI Have posted before (sorry)

We did the obvious stuff.... (well to me) Cap, Rotor Ign module, Plugs, Wires, Coil... Good oil, checked all fluids.. Mine itself does have afpr, 3" Exhaust and a walbro pump... others are pretty much stock. Mine does run the best, but still falls hard and misfires.. When you say wastegate setting.. ?!? I am not real sure about that.. is there some sort of in depth read up some where about where that is supposed to be set at ? I really hate to sound dumb, but I love my truck and I really want her to run the way she's meant to..

 

[BigBadSmoosh]

Re: Tune(s) Needed in RI Have posted before (sorry)

We did the obvious stuff.... (well to me) Cap, Rotor Ign module, Plugs, Wires, Coil... Good oil, checked all fluids.. Mine itself does have afpr, 3" Exhaust and a walbro pump... others are pretty much stock. Mine does run the best, but still falls hard and misfires.. When you say wastegate setting.. ?!? I am not real sure about that.. is there some sort of in depth read up some where about where that is supposed to be set at ? I really hate to sound dumb, but I love my truck and I really want her to run the way she's meant to..

when the fuel "cuts out" does the service engine soon light go on?

you could be over boosting which would cause a similar issue to what you are having. Do all trucks have a catalytic converter? What is the fuel pressure set at? does this happen at highway speeds or only at full throttle?

 

[Inferno]

Re: Tune(s) Needed in RI Have posted before (sorry)

ok, just installed Fuel press gauge... just over 40psi at idle, goes to 60 on accel, and still feels like my moms station wagon is faster.....

 

[BigBadSmoosh]

Re: Tune(s) Needed in RI Have posted before (sorry)

ok, just installed Fuel press gauge... just over 40psi at idle, goes to 60 on accel, and still feels like my moms station wagon is faster.....

that seems kinda high..

is the ses light coming on?

 

[Inferno]

Re: Tune(s) Needed in RI Have posted before (sorry)

No...

 

[Inferno]

Re: Tune(s) Needed in RI Have posted before (sorry)

How about spark plug gap?? I never checked that....

 

[powercat6]

Re: Tune(s) Needed in RI Have posted before (sorry)

Have you checked the service manuals here:

http://www.sportmachines.com/wiki/tiki-list_file_gallery.php?galleryId=2

 

[turbodig]

Re: Tune(s) Needed in RI Have posted before (sorry)

Find a local with DM and a cable, and make some runs. Post the data here. (or mail it to me, and I'll post 'em)

Stockers are generally pretty easy to fix, since we know what to expect.

If you've got a stock chip and a freer-flowing cat, you could be hitting the overboost cut, but you normally see a code for that.

Another thing that sometimes happens is that the 1-2 slips, and the stock chip bangs the rev limiter .

60 psi peak on a 40# base FP implies 20 psi of boost, and if you're running that on street gas and a stock chip, it's pulling *tons* of timing out due to knock.

 

[NOWAY55]

Re: Tune(s) Needed in RI Have posted before (sorry)

Had similar problems. Finally replaced distributor and it all got better. We did do some nice mods though getting there. My favorite is the Alky Control kit!

 

[Inferno]

Re: Tune(s) Needed in RI Have posted before (sorry)

There is no one that I know of that has anything obd1 related.. I am really debating getting the moats setup, (i think that has tunerpro which does data logging, I could be wrong) as far as boost and pressure... AT WOT or close to it, it bogs and sputters, I got 58psi on my gauge and about 6 lbs of boost... my Wideband states I am at 15.7 - 15.8, when I am at 1/4 throttle she pulls good until 3000-3500 rpms, then bogs and sputters (though ot as bad) still 58psi fuel, about 12 lbs boost and 15.2... not sure if that helps any more, I still have not checked plus and gap.. what plugs should I run? and what gap.. I did read service manuals and changed everything but the dist.. as far as gap, I thought it would change due to aftermarket accy... and again, is moats with apu-1 ok ??

 

[sy#2716]

Re: Tune(s) Needed in RI Have posted before (sorry)

IF you are in the 15 range on the wideband you better be saving for a new motor. That is on the lean side. You dont need to be gong WOT with those type of numbers on the wideband. You need to get Datamaster and see what the Knock counts are before you blow it up.

 

[turbodig]

Re: Tune(s) Needed in RI Have posted before (sorry)

IF you are in the 15 range on the wideband you better be saving for a new motor. That is on the lean side. You dont need to be gong WOT with those type of numbers on the wideband. You need to get Datamaster and see what the Knock counts are before you blow it up.

x2. Assuming your wideband is working right and you're not getting an air leak, that's going to kill a motor in a hurry.

WOT shouldn't ever be leaner than 12.7 or so, with typical street gas values in the 11s.

 

[Inferno]

Re: Tune(s) Needed in RI Have posted before (sorry)

ohh geez now I think I need even more education.. I thought 14.7 was normal... ??
and anything on the gap, or is that useless ??

 

[turbodig]

Re: Tune(s) Needed in RI Have posted before (sorry)

ohh geez now I think I need even more education.. I thought 14.7 was normal... ??
and anything on the gap, or is that useless ??

14.7 is normal for warmed-up cruise and idle, but is *really* bad for WOT.

I generally don't take pump gas trucks leaner than 11.8:1, although it does vary a bit.

Gap is the least of your worries with AFRs like that.

You really need the scantool software. TunerProRT is $30. Cables are $60 or less if you're patient for a used one.

 

[jslezak83]

Re: Tune(s) Needed in RI Have posted before (sorry)

Where in RI are you? I have limited time and knowledge, but I'd be willing to help datalog. I've got TunerProRT. Maybe we can get this thing sorted out. -Jim

 

[Inferno]

Re: Tune(s) Needed in RI Have posted before (sorry)

I am in woonsocket... but I can goto you if need be.. I would really appreciate it and would be willing to either get ya some parts or $$ for your time...

 

[jslezak83]

Re: Tune(s) Needed in RI Have posted before (sorry)

I'm in the Warwick area, but maybe sometime on a weekend we could get together. As I said, tuning is stil new to me, but we can at least log some data to get an idea. -Jim